Question about IsCancelled

I have used the EnableSystemCancel attribute in the case where I am

interfacing to an external C DLL and I need to leave the DLL in a known

state before I clean some stuff up when the task terminates. In my case,

the particular task is a queue service thread, so it's pretty easy to code

this with a while loop.

while not task.isCancelled do

// task body is here

end while;

// task cleanup is here

As for your second question, I believe choosing the Cancel Task option from

the debugger is the same as calling MyTaskDesc.SetCancel() in TOOL code.

The on-line help for CancelException has a good example of how to trap and

handle this.

Kevin Klein

Millennium Partners, Inc.

An association of men who will not quarrel with one another is a thing

which has never yet existed, from the greatest confederacy of nations

down to a town meeting or a vestry.

-- Thomas Jefferson

--Original Message--

From: Kimball, Richard <Richard.Kimball@LibertyMutual.com>

To: 'Forte Mailing List' <kamranamin@yahoo.com>

Date: Monday, December 15, 1997 5:41 PM

Subject: Question about IsCancelled

>Hi,

>

>Has anyone used the TaskHandle.EnableSytemCancel attribute

>with any success? When should this actually used? I want

>to prevent the FORTE runtime from canceling me during

>critical sections of my code.

>

>Basically, I'm trying to make sure that my database and

>updates I'm doing performing on regular UNIX files are kept

>in sync.

>

>Does anyone have any sample code that uses this attribute?

>

>A second question is about the debugger? Is there any

>indication, such as an exception or an event, to the

>running TOOL code when the user presses the Cancel Task

>menu item? I want to do some cleanup before exiting.

>

>-rick

>

at 2007-6-29 9:20:44 >